Linker Tasks

Using the Compiler to Link

Renaming the Output File with -o

The -oname option causes ld to name the output file name instead of a.out. For example, to compile a C program prog.c and name the resulting file sum_num:

$ cc -Aa -o sum_num prog.c

Compile using -o option.

$ sum_num

Run the program.

Enter a

number to sum: 5

 

The sum

of 1 to 5: 15

 

Specifying Libraries with -l

Sometimes programs call routines not contained in the default libraries. In such cases you must explicitly specify the necessary libraries on the compile line with the -loption. The compilers pass -loptions directly to the linker before the default libraries.

For example, if a C program calls library routines in the curses library (libcurses), you must specify -lcurseson the cc command line:

$ cc -Aa -v cursesprog.c -lcurses

...

/usr/ccs/bin/ld /opt/langtools/lib/crt0.o -u main \ cursesprog.o -lcurses -lc

cc: Entering Link editor.

Linking with the crt0.o Startup File in 32-bit mode

Notice also, in the above example, that the compiler linked cursesprog.o with the file /opt/langtools/lib/crt0.o. This file contains object code that performs tasks which must be executed when a program starts running — for example, retrieving any arguments specified on the command line when the program is invoked. For details on this file, see crt0(3) and “The crt0.o Startup File” on page 43.

Suppressing the Link-Edit Phase with -c

The -ccompiler option suppresses the link-edit phase. That is, the compiler generates only the .o files and not the a.out file. This is useful when compiling source files that contain only subprograms and data. These may be linked later with other object files, or placed in an archive or shared library. The resulting object files can then be specified on the compiler command line, just like source files. For example:

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Kenwood HP 9000 Renaming the Output File with -o, Specifying Libraries with -l, Suppressing the Link-Edit Phase with -c
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HP 9000 specifications

The Kenwood HP 9000 is a cutting-edge home appliance designed for culinary enthusiasts seeking to elevate their cooking experience. This powerful kitchen machine stands out for its multi-functionality, combining the roles of a food processor, blender, and mixer into one sleek unit.

One of the flagship features of the Kenwood HP 9000 is its robust motor, which delivers exceptional performance across various tasks. With a powerful motor that operates at multiple speeds, users can tackle everything from kneading dough to finely chopping vegetables with ease. The variable speed control allows for precision, ensuring that every ingredient is processed to perfection according to individual preferences.

The HP 9000 comes equipped with a variety of attachments that enhance its versatility. Among these are a stainless-steel mixing bowl, a dough hook, a whisk, and multiple cutting blades. This extensive array of accessories means that users can whip up delightful pastries, create homemade pasta, or prepare smoothies with minimal hassle. Each attachment is designed for easy attachment and removal, making the transition between tasks seamless and efficient.

Another key characteristic of the Kenwood HP 9000 is its advanced safety features. The design incorporates mechanisms that prevent the machine from operating unless all components are securely in place. This not only gives users peace of mind while cooking but also ensures longevity for the appliance, reducing the risk of wear and tear over time.

In terms of design, the HP 9000 is both modern and aesthetically pleasing. Its ergonomic shape and compact size make it easy to store and use in various kitchen settings, while the high-quality materials used in its construction guarantee durability and longevity. The user interface is intuitive, with clearly labeled buttons that facilitate operation, ensuring that even novice cooks can navigate the machine effortlessly.

Additionally, the Kenwood HP 9000 features innovative technologies, such as an integrated digital timer and a pulse function for added control during food preparation. These features enhance cooking precision, allowing users to achieve consistent results every time.

In summary, the Kenwood HP 9000 is an exceptional kitchen appliance that combines power, versatility, and safety. With its advanced features and user-friendly design, it is an ideal choice for anyone looking to simplify their cooking process while achieving professional-level results. Whether you're whipping up a quick meal or tackling an elaborate recipe, the HP 9000 is a reliable companion that will inspire culinary creativity.
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